What does "not available" or "reference rates" mean?

未能預訂跟參考價有什麼用？

Written by Kelsey Cheung Updated over a week ago

Reference rates are rates retrieved from public sources, and cannot be used for bookings. Some rates are listed as 'Unavailable' because some money exchange providers might have set a limit on the number of transactions for that currency pair, which may have been filled.